Long, > In lower layer driver's (LLD) scsi_host_template, the driver may > optionally ask SCSI to allocate its private driver memory for each > command, by specifying cmd_size. This memory is allocated at the end > of scsi_cmnd by SCSI. Later when SCSI queues a command, the LLD can > use scsi_cmd_priv to get to its private data. > > Some LLD, e.g. hv_storvsc, doesn't clear its private data before > use. In this case, the LLD may get to stale or uninitialized data in > its private driver memory. This may result in unexpected driver and > hardware behavior. > > Fix this problem by also zeroing the private driver memory before > passing them to LLD.
Applied to 4.12/scsi-fixes. Thank you! -- Martin K. Petersen Oracle Linux Engineering
